databases/mongodb-tools: update to 100.6.0

changes: https://www.mongodb.com/docs/database-tools/release-notes/database-tools-changelog/#100.6.0-changelog

• Poudriere suggested to remove USES=ssl which seems to work in my test.
• change maintainer to my @FreeBSD.org address.

Approved by: rene (mentor)
Differential Revision: https://reviews.freebsd.org/D37141